[ 41.442368][ T25] audit: type=1800 audit(1575352777.097:25): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.466213][ T25] audit: type=1800 audit(1575352777.097:26): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.511167][ T25] audit: type=1800 audit(1575352777.097:27): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.536012][ T25] audit: type=1800 audit(1575352777.097:28): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts. 2019/12/03 05:59:44 fuzzer started 2019/12/03 05:59:46 dialing manager at 10.128.0.26:38907 2019/12/03 05:59:46 syscalls: 2697 2019/12/03 05:59:46 code coverage: enabled 2019/12/03 05:59:46 comparison tracing: enabled 2019/12/03 05:59:46 extra coverage: extra coverage is not supported by the kernel 2019/12/03 05:59:46 setuid sandbox: enabled 2019/12/03 05:59:46 namespace sandbox: enabled 2019/12/03 05:59:46 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 05:59:46 fault injection: enabled 2019/12/03 05:59:46 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 05:59:46 net packet injection: enabled 2019/12/03 05:59:46 net device setup: enabled 2019/12/03 05:59:46 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 05:59:46 devlink PCI setup: PCI device 0000:00:10.0 is not available 05:59:47 executing program 0: r0 = openat$sequencer(0xffffffffffffff9c, &(0x7f0000000080)='/dev/sequencer\x00', 0x0, 0x0) ioctl$SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION(r0, 0x40085112, &(0x7f00000000c0)={{0x81, 0x8}}) 05:59:47 executing program 1: r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)={0xa, 0x1fe, 0x7, 0x9}, 0x3c) r1 = bpf$MAP_CREATE(0x0, &(0x7f00004f9fe4)={0xd, 0x4, 0x4, 0x100000001, 0x0, r0}, 0x2c) bpf$PROG_LOAD(0x5, &(0x7f0000000180)={0x7, 0x5, &(0x7f0000000040)=@framed={{}, [@map={0x18, 0x0, 0x1, 0x0, r1}]}, &(0x7f0000000140)='GPL\x00', 0x4, 0xdd, &(0x7f0000000240)=""/221, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x70) syzkaller login: [ 51.792778][ T8099] IPVS: ftp: loaded support on port[0] = 21 [ 51.941090][ T8099] chnl_net:caif_netlink_parms(): no params data found [ 51.979297][ T8099] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.995549][ T8099] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.004231][ T8099] device bridge_slave_0 entered promiscuous mode [ 52.016162][ T8099] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.025824][ T8099] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.026698][ T8102] IPVS: ftp: loaded support on port[0] = 21 05:59:47 executing program 2: r0 = memfd_create(&(0x7f00000000c0)='\vem1\xc1\xf8\xa6\x8dN\xc0\xa3\\\xe2\x8b\xaa\xffIb\x9e\xc1\xcb\xa2\xba\xe5\xf4\x97\xac#*\xff', 0x0) lseek(r0, 0xfffffffffffffffc, 0x1) [ 52.055949][ T8099] device bridge_slave_1 entered promiscuous mode [ 52.084966][ T8099] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.097214][ T8099] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.138828][ T8099] team0: Port device team_slave_0 added [ 52.158729][ T8099] team0: Port device team_slave_1 added [ 52.248083][ T8099] device hsr_slave_0 entered promiscuous mode 05:59:47 executing program 3: r0 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f0000000040)={0x807fd}, 0x10) write(r0, &(0x7f0000000100)="1c0000001a000100000000000000a000800020000000010000000000", 0x1c) [ 52.295953][ T8099] device hsr_slave_1 entered promiscuous mode [ 52.385406][ T8104] IPVS: ftp: loaded support on port[0] = 21 [ 52.457673][ T8099] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.466296][ T8107] IPVS: ftp: loaded support on port[0] = 21 05:59:48 executing program 4: r0 = socket$kcm(0x10, 0x2, 0x10) sendmsg$kcm(r0, &(0x7f0000000080)={0x0, 0x4c, &(0x7f00000000c0)=[{&(0x7f0000000000)="2e00000022008151e00f80ecdb4cb904024865160b00010003000000000004140e0006001500cd5edc2976d153b4", 0x235}], 0x1}, 0x0) [ 52.507381][ T8102] chnl_net:caif_netlink_parms(): no params data found [ 52.522202][ T8099] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.577510][ T8099] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.652312][ T8099] netdevsim netdevsim0 netdevsim3: renamed from eth3 05:59:48 executing program 5: r0 = socket$inet6(0xa, 0x80003, 0xff) ioctl(r0, 0x1000008912, &(0x7f0000000080)="0800b5055e0bcfe87b2071") r1 = epoll_create1(0x0) fcntl$getownex(r1, 0x40c, &(0x7f000045fff8)) [ 52.794327][ T8109] IPVS: ftp: loaded support on port[0] = 21 [ 52.823934][ T8099] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.831145][ T8099] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.838887][ T8099] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.845991][ T8099] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.857582][ T8102] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.864625][ T8102] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.873719][ T8102] device bridge_slave_0 entered promiscuous mode [ 52.881428][ T8102] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.889952][ T8102] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.897722][ T8102] device bridge_slave_1 entered promiscuous mode [ 52.939877][ T8102] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.974921][ T8102] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.001159][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.011335][ T8111] IPVS: ftp: loaded support on port[0] = 21 [ 53.017925][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.035125][ T8104] chnl_net:caif_netlink_parms(): no params data found [ 53.062742][ T8102] team0: Port device team_slave_0 added [ 53.102892][ T8102] team0: Port device team_slave_1 added [ 53.138372][ T8107] chnl_net:caif_netlink_parms(): no params data found [ 53.166994][ T8099] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.218307][ T8102] device hsr_slave_0 entered promiscuous mode [ 53.275864][ T8102] device hsr_slave_1 entered promiscuous mode [ 53.325580][ T8102] debugfs: Directory 'hsr0' with parent '/' already present! [ 53.358965][ T8104] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.366103][ T8104] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.373621][ T8104] device bridge_slave_0 entered promiscuous mode [ 53.381482][ T8104] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.388640][ T8104] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.397873][ T8104] device bridge_slave_1 entered promiscuous mode [ 53.429232][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.437679][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.470806][ T8099] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.480959][ T8104] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.494710][ T8104] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.503807][ T8102] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 53.548535][ T8109] chnl_net:caif_netlink_parms(): no params data found [ 53.578232][ T8102] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 53.638312][ T8102] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 53.690706][ T8107] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.698240][ T8107] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.706221][ T8107] device bridge_slave_0 entered promiscuous mode [ 53.715435][ T8104] team0: Port device team_slave_0 added [ 53.722349][ T8102] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 53.787715][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.796376][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.804631][ T3009] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.811717][ T3009] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.833675][ T8107] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.841372][ T8107] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.849068][ T8107] device bridge_slave_1 entered promiscuous mode [ 53.866844][ T8104] team0: Port device team_slave_1 added [ 53.873481][ T8107] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.896453][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.904914][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.913653][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.920710][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.928233][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.936969][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.945244][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.954160][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.962394][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.970790][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.979020][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.987297][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.995324][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.003625][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.031795][ T8107] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.044432][ T8099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.057104][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.068721][ T8109] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.068747][ T8109] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.083473][ T8109] device bridge_slave_0 entered promiscuous mode [ 54.095811][ T8109] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.102851][ T8109] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.110712][ T8109] device bridge_slave_1 entered promiscuous mode [ 54.142834][ T8099] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.152533][ T8111] chnl_net:caif_netlink_parms(): no params data found [ 54.164517][ T8109] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.218370][ T8104] device hsr_slave_0 entered promiscuous mode [ 54.276158][ T8104] device hsr_slave_1 entered promiscuous mode [ 54.345654][ T8104] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.353693][ T8112] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.361412][ T8112] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.378427][ T8109] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.400542][ T8107] team0: Port device team_slave_0 added [ 54.421369][ T8109] team0: Port device team_slave_0 added [ 54.428494][ T8109] team0: Port device team_slave_1 added [ 54.439560][ T8107] team0: Port device team_slave_1 added [ 54.540708][ T8111] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.548673][ T8111] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.557479][ T8111] device bridge_slave_0 entered promiscuous mode [ 54.566624][ T8111] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.573734][ T8111] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.581875][ T8111] device bridge_slave_1 entered promiscuous mode [ 54.603037][ T8111] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.605449][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 159.612206][ C0] rcu: 0-...!: (1 GPs behind) idle=2d2/1/0x4000000000000002 softirq=10153/10161 fqs=35 [ 159.622161][ C0] (t=10500 jiffies g=5685 q=203) [ 159.627173][ C0] rcu: rcu_preempt kthread starved for 10430 jiffies! g5685 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 159.638250][ C0] rcu: RCU grace-period kthread stack dump: [ 159.644123][ C0] rcu_preempt R running task 28992 10 2 0x80004000 [ 159.652010][ C0] Call Trace: [ 159.655289][ C0] __schedule+0x9a0/0xcc0 [ 159.659613][ C0] schedule+0x181/0x210 [ 159.663770][ C0] schedule_timeout+0x14f/0x240 [ 159.668604][ C0] ? run_local_timers+0x120/0x120 [ 159.673617][ C0] rcu_gp_kthread+0xed8/0x1770 [ 159.678374][ C0] kthread+0x332/0x350 [ 159.682423][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 159.687519][ C0] ? kthread_blkcg+0xe0/0xe0 [ 159.692093][ C0] ret_from_fork+0x24/0x30 [ 159.696503][ C0] NMI backtrace for cpu 0 [ 159.700818][ C0] CPU: 0 PID: 8122 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 159.709028][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.719063][ C0] Call Trace: [ 159.722321][ C0] [ 159.725148][ C0] dump_stack+0x1fb/0x318 [ 159.729448][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 159.734279][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 159.740408][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 159.746448][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 159.752573][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 159.758475][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 159.763603][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 159.768781][ C0] ? trace_hardirqs_off+0x74/0x80 [ 159.773814][ C0] update_process_times+0x12d/0x180 [ 159.778989][ C0] tick_sched_timer+0x263/0x420 [ 159.783820][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 159.789357][ C0] __hrtimer_run_queues+0x403/0x840 [ 159.794575][ C0] hrtimer_interrupt+0x38c/0xda0 [ 159.799495][ C0] ? debug_smp_processor_id+0x9/0x20 [ 159.804753][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 159.810268][ C0] apic_timer_interrupt+0xf/0x20 [ 159.815210][ C0] [ 159.818125][ C0] RIP: 0010:__memcg_kmem_uncharge+0xe/0x2e0 [ 159.823991][ C0] Code: c3 08 02 00 00 48 89 df 4c 89 f6 e8 dc 7d ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 <89> f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 38 4d 89 f5 [ 159.843605][ C0] RSP: 0018:ffffc90002607e00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 159.851987][ C0] RAX: ffffffff81486ea4 RBX: ffffea0001b16cc0 RCX: ffff88806c602040 [ 159.859976][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001b16cc0 [ 159.868050][ C0] RBP: ffffc90002607e30 R08: 000000000003a768 R09: fffffbfff120248a [ 159.875996][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88806c59e9a0 [ 159.883945][ C0] R13: dffffc0000000000 R14: 1ffff1100d8b3d34 R15: ffff88809304b568 [ 159.891904][ C0] ? free_thread_stack+0x124/0x590 [ 159.896994][ C0] ? free_thread_stack+0x124/0x590 [ 159.902269][ C0] free_thread_stack+0x12e/0x590 [ 159.907181][ C0] put_task_stack+0xa3/0x130 [ 159.911740][ C0] finish_task_switch+0x3f1/0x550 [ 159.916751][ C0] schedule_tail+0x20/0x1a0 [ 159.921228][ C0] ret_from_fork+0x8/0x30 [ 159.925529][ C0] RIP: 0033:0x45d049 [ 159.929395][ C0] Code: ff 48 85 f6 0f 84 d7 8c fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c ae 8c fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75 [ 159.948979][ C0] RSP: 002b:00007ff05cbd3db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 [ 159.957359][ C0] RAX: 0000000000000000 RBX: 00007ff05cbd4700 RCX: 000000000045d049 [ 159.965301][ C0] RDX: 00007ff05cbd49d0 RSI: 00007ff05cbd3db0 RDI: 00000000003d0f00 [ 159.973254][ C0] RBP: 00007ffe96b2fc40 R08: 00007ff05cbd4700 R09: 00007ff05cbd4700 [ 159.981196][ C0] R10: 00007ff05cbd49d0 R11: 0000000000000202 R12: 0000000000000000 [ 159.989146][ C0] R13: 00007ffe96b2fadf R14: 00007ff05cbd49c0 R15: 000000000075bf2c